JPH0458910B2 - - Google Patents
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- Publication number
- JPH0458910B2 JPH0458910B2 JP5118285A JP5118285A JPH0458910B2 JP H0458910 B2 JPH0458910 B2 JP H0458910B2 JP 5118285 A JP5118285 A JP 5118285A JP 5118285 A JP5118285 A JP 5118285A JP H0458910 B2 JPH0458910 B2 JP H0458910B2
- Authority
- JP
- Japan
- Prior art keywords
- reflecting mirror
- axis
- optical
- optical system
- reflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- 230000003287 optical effect Effects 0.000 claims description 67
- 239000002131 composite material Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、例えば光学追尾装置において、目
標を捜索、検出するために、視野をロゼツト走査
又はスパイラル走査する光学走査装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical scanning device that performs rosette scanning or spiral scanning of a field of view in order to search for and detect a target, for example in an optical tracking device.
第３図は従来の光学走査装置の一例を示す概略
構成図である。第３図は、特に誘導ミサイル等の
光学ホーミング装置に応用した場合の光学走査装
置を示している。図において、１はドーム、２は
第１の反射鏡、３は第２の反射鏡、４は検出器、
５は回転軸、６は磁石、７は駆動コイル、８はモ
ータである。ドーム１、第１の反射鏡２、第２の
反射鏡３で光学系を構成しており、検出器４はこ
の光学系の焦点位置に設置されている。第１の反
射鏡２、第２の反射鏡３、磁石６、モータ８は、
通常、検出器４の受光面と回転軸５との交点を首
振り中心とするジンバル（図示しない）に搭載さ
れ、上記光学系を所定の角度範囲に振り向けるこ
とができるように構成されている。第１の反射鏡
２の光軸は、回転軸５に対して少し傾けられてい
る。また、第２の反射鏡３の光軸も、同様に回転
軸５に対して少し傾けられている。第１の反射鏡
２は、磁石６に固着されており、駆動コイル７に
よつて回転軸５の周りに回転される。一方、第２
の反射鏡３はモータ８によつて回転軸５の周りに
回転される。
FIG. 3 is a schematic configuration diagram showing an example of a conventional optical scanning device. FIG. 3 shows an optical scanning device especially when applied to an optical homing device such as a guided missile. In the figure, 1 is a dome, 2 is a first reflector, 3 is a second reflector, 4 is a detector,
5 is a rotating shaft, 6 is a magnet, 7 is a drive coil, and 8 is a motor. The dome 1, the first reflecting mirror 2, and the second reflecting mirror 3 constitute an optical system, and the detector 4 is installed at the focal point of this optical system. The first reflecting mirror 2, the second reflecting mirror 3, the magnet 6, and the motor 8 are:
Usually, it is mounted on a gimbal (not shown) whose swing center is centered at the intersection of the light-receiving surface of the detector 4 and the rotation axis 5, and is configured so that the optical system can be oriented within a predetermined angular range. . The optical axis of the first reflecting mirror 2 is slightly inclined with respect to the rotation axis 5. Further, the optical axis of the second reflecting mirror 3 is also slightly inclined with respect to the rotation axis 5. The first reflecting mirror 2 is fixed to a magnet 6 and rotated around a rotation axis 5 by a drive coil 7 . On the other hand, the second
The reflecting mirror 3 is rotated around a rotation axis 5 by a motor 8.
上記第３図に示すように構成された光学走査装
置では、第１の反射鏡２と第２の反射鏡３を互い
に反対方向に回転させることによつてロゼツト走
査が実現され、また、第１の反射鏡２と第２の反
射鏡３を同方向に回転させることによつてスパイ
ラル走査が実現され、これにより、検出器４の比
較的に狭い瞬時視野で広い視野を走査することが
できる。 In the optical scanning device configured as shown in FIG. 3, rosette scanning is realized by rotating the first reflecting mirror 2 and the second reflecting mirror 3 in opposite directions. Spiral scanning is realized by rotating the second reflecting mirror 2 and the second reflecting mirror 3 in the same direction, whereby a wide field of view can be scanned with a relatively narrow instantaneous field of view of the detector 4.
上記のような従来の光学走査装置では、回転部
分である第１の反射鏡２と磁石６及び第２の反射
鏡３の形状が回転軸５に対して回転対称な構造で
ないため、これらの反射鏡２，３を回転させる
と、例えばモータ８のベアリングに負荷がかかり
破損したりする問題点があつた。このような問題
点を避けるため、これらの反射鏡２，３にカウン
タバランスを取付け回転軸５に対するダイナミツ
クバランスを良くする方法が一般にとられるが、
この結果、構造が複雑になる上にモータ８等の負
荷が増加するという別の問題点があつた。またジ
ンバルには重量の重いモータ８が搭載されている
が、首振り中心から離れているためジンバル全体
の重心が前方に位置し、ジンバルのバランスが悪
いという問題点があつた。
In the conventional optical scanning device as described above, since the shapes of the first reflecting mirror 2, the magnet 6, and the second reflecting mirror 3, which are rotating parts, are not rotationally symmetrical with respect to the rotation axis 5, these reflections are When the mirrors 2 and 3 are rotated, a problem arises in that, for example, a load is applied to the bearings of the motor 8, leading to damage. In order to avoid such problems, a method is generally adopted in which a counterbalance is attached to these reflecting mirrors 2 and 3 to improve the dynamic balance with respect to the rotating shaft 5.
As a result, another problem occurred in that the structure became complicated and the load on the motor 8 etc. increased. Furthermore, the gimbal is equipped with a heavy motor 8, but because it is located far from the center of swing, the center of gravity of the entire gimbal is located in the front, resulting in the problem of poor balance of the gimbal.
この発明は、かかる問題点を解決するためにな
されたもので、第１の反射鏡や第２の反射鏡が傾
いている場合にも、ダイナミツクバランスのとれ
た光学走査装置を得ることを目的とするものであ
る。 This invention was made in order to solve such problems, and an object of the present invention is to obtain an optical scanning device that is dynamically balanced even when the first reflecting mirror and the second reflecting mirror are tilted. That is.
また、この発明の別の発明は、上記目的に加え
てジンバルのバランスを良くすることができる光
学走査装置を得ることを目的とするものである。 Another object of the present invention is to obtain an optical scanning device that can improve the balance of the gimbal in addition to the above object.
この発明に係る光学走査装置は、光学系を構成
する第１の反射鏡の反射面と光学系の光軸との交
点を通り、この光軸に垂直なｘ軸の周りに第１の
反射鏡を回転振動させると共に、光学系を構成す
る第２の反射鏡の反射面と光学系の光軸との交点
を通り、この光軸とｘ軸に垂直なｙ軸の周りに第
２の反射鏡を回転振動させるようにしたものであ
る。
In the optical scanning device according to the present invention, the first reflecting mirror passes through the intersection of the reflecting surface of the first reflecting mirror constituting the optical system and the optical axis of the optical system, and extends around the x-axis perpendicular to the optical axis. At the same time, the second reflecting mirror passes through the intersection of the reflecting surface of the second reflecting mirror constituting the optical system and the optical axis of the optical system, and around the y-axis perpendicular to this optical axis and the x-axis. It rotates and vibrates.
また、この発明の別の発明に係る光学走査装置
は、光学系を構成する反射鏡のうち、ジンバルの
首振り中心近くに設置された一つの反射鏡の反射
面と光学系の光軸との交点を通り、この光軸に垂
直で、かつ互いに直交するｘ軸及びｙ軸の周りに
一つの反射鏡をそれぞれ回転振動させるようにし
たものである。 In addition, in the optical scanning device according to another aspect of the present invention, the reflection surface of one of the reflecting mirrors constituting the optical system, which is installed near the center of oscillation of the gimbal, and the optical axis of the optical system are arranged. One reflecting mirror is rotated and vibrated around the x-axis and y-axis, which pass through the intersection, are perpendicular to the optical axis, and are orthogonal to each other.
この発明の光学走査装置においては、第１の反
射鏡と第２の反射鏡をそれぞれ回転振動させるだ
けであるから、ダイナミツクなバランスが改善さ
れる。
In the optical scanning device of the present invention, since the first reflecting mirror and the second reflecting mirror are simply rotated and vibrated, the dynamic balance is improved.
また、この発明の別の発明の光学走査装置にお
いては、ジンバルの中心近くに設置された反射鏡
を回転振動させるだけであるから、重量の重い反
射鏡の駆動装置がジンバルの首振り中心にきて、
ジンバルのバランスが良くなる。 In addition, in the optical scanning device according to another aspect of the present invention, since the reflecting mirror installed near the center of the gimbal is simply rotated and vibrated, the driving device of the heavy reflecting mirror is moved to the center of oscillation of the gimbal. hand,
Improves gimbal balance.
第１図はこの発明の一実施例である光学走査装
置を示す概略構成図で、第３図と同一部分は同一
符号を用いて表示してあり、その詳細な説明は省
略する。第１図に示すものも、上記従来例と同様
に、誘導ミサイル等の光学ホーミング装置に適用
した場合の光学走査装置である。図において、９
は光学系の光軸、１０は第１の駆動装置、１１は
ｘ軸、１２は第２の駆動装置、１３はｙ軸であ
る。そして、ドーム１、第１の反射鏡２、第２の
反射鏡３で光学系を構成し、また、検出器４は上
記光学系の焦点位置に設置されている。ここで、
各第１及び第２の駆動装置１０、１２の具体例と
しては、圧電セラミツクアクチユエータが挙げら
れるが、この発明における各第１及び第２の駆動
装置１０，１２は、これに限らず一軸の周りに回
転振動を行う能力を有するものであれば、その種
類を問わず使用ができる。
FIG. 1 is a schematic configuration diagram showing an optical scanning device according to an embodiment of the present invention, and the same parts as in FIG. 3 are designated by the same reference numerals, and detailed explanation thereof will be omitted. The one shown in FIG. 1 is also an optical scanning device that is applied to an optical homing device for guided missiles and the like, similar to the conventional example described above. In the figure, 9
is the optical axis of the optical system, 10 is the first driving device, 11 is the x-axis, 12 is the second driving device, and 13 is the y-axis. The dome 1, the first reflecting mirror 2, and the second reflecting mirror 3 constitute an optical system, and the detector 4 is installed at the focal point of the optical system. here,
A specific example of each of the first and second drive devices 10 and 12 is a piezoelectric ceramic actuator, but each of the first and second drive devices 10 and 12 in the present invention is not limited to this. Any type can be used as long as it has the ability to generate rotational vibration around the .
上記第１図に示すように構成された光学走査装
置では、第１の駆動装置１０は、第１の反射鏡２
の反射面と光軸９との交点を通り、光軸９に垂直
で、紙面に垂直な方向にあるｘ軸１１の周りに第
１の反射鏡２を回転振動させることができる。一
方、第２の駆動装置１２は、第２の反射鏡３の反
射面と光軸９との交点を通り、光軸９に垂直で、
紙面内にあるｙ軸１３の周りに第２の反射鏡３を
回転振動とさせることができる。さらに、第１の
反射鏡２と第２の反射鏡３の形状は、それぞれ前
記ｘ軸１１と第１の反射鏡２の法線を含む面、及
び前記ｙ軸１３と第２の反射鏡３の法線を含む面
に対して対称な構造になつている。 In the optical scanning device configured as shown in FIG.
The first reflecting mirror 2 can be rotated and vibrated around the x-axis 11 which passes through the intersection of the reflecting surface and the optical axis 9, is perpendicular to the optical axis 9, and is perpendicular to the plane of the paper. On the other hand, the second driving device 12 passes through the intersection of the reflecting surface of the second reflecting mirror 3 and the optical axis 9, and is perpendicular to the optical axis 9.
The second reflecting mirror 3 can be rotated and vibrated around the y-axis 13 in the plane of the paper. Furthermore, the shapes of the first reflecting mirror 2 and the second reflecting mirror 3 are respectively a plane including the x-axis 11 and the normal to the first reflecting mirror 2, and a plane including the normal to the y-axis 13 and the second reflecting mirror 3. It has a symmetrical structure with respect to the plane containing the normal line.
今、第１図に示す光学走査装置においては、第
１の駆動装置１０の駆動信号として、２つの異な
る周波数1，2の余弦波の合成信号C′〔cos（2π1
ｔ）＋cos（2π2ｔ）〕を与え、第１の反射鏡２をｘ
軸１１の周りに回転振動させる。ここで、C′は定
数である。一方、第２の駆動装置１２の駆動信号
として、２つの異なる周波数1，2の正弦波の合
成信号C′〔sin（2π1ｔ）−sin（2π2ｔ）〕を与
え、第
２の反射鏡３をｙ軸１３の周りに回転振動させ
る。この時、検出器４の瞬時視野のｘ軸１１、ｙ
軸１３の方向の方向余弦（Ｘ，Ｙ）は、下記の第
(1)式で与えられる。 Now , in the optical scanning device shown in FIG. 1, a composite signal C ' [cos (2π 1
t)+cos(2π 2 t)], and the first reflecting mirror 2 is
Rotate and vibrate around the axis 11. Here, C' is a constant. On the other hand, a composite signal C′ [sin (2π 1 t) − sin (2π 2 t)] of sine waves of two different frequencies 1 and 2 is given as a drive signal for the second drive device 12, and the second reflection The mirror 3 is rotated and vibrated around the y-axis 13. At this time, the x-axis 11, y of the instantaneous field of view of the detector 4
The direction cosine (X, Y) of the direction of axis 13 is
It is given by equation (1).
Ｘ＝Ｃ〔sin（2π1ｔ）−sin（2π2ｔ）〕Ｙ＝Ｃ〔
cos
（2π1ｔ）＋cos（2π2ｔ）〕 ……(1)
ただし、Ｃは回転振動による第１の反射鏡２と
第２の反射鏡３の偏向角変化の振幅等で決まる定
数、ｔは時間である。上記(1)式はロゼツト走査や
スパイラル走査を表わす式であり、２つの異なる
周波数1と2の比が負の有理数で与えられると、
Ｘ，Ｙの時間軌跡を見た場合、周期的な花びら状
のパターンとなるロゼツト走査が実現される。ま
た２つの異なる周波数1と2の比が正の有理数で
与えられると、Ｘ，Ｙの時間軌跡を見た場合、周
期的な渦巻き状のスパイラル走査が実現される。
なお1と2の比が負ということは、第２の駆動装
置１２の駆動信号として、例えば合成信号C′〔sin
（2π1ｔ）＋sin（2π｜2｜ｔ）を与えることを意
味
する。X=C[sin(2π 1 t)−sin(2π 2 t)]Y=C[
cos
(2π 1 t) + cos (2π 2 t)] ...(1) However, C is a constant determined by the amplitude of the deflection angle change of the first reflecting mirror 2 and the second reflecting mirror 3 due to rotational vibration, and t is It's time. Equation (1) above represents rosette scanning or spiral scanning, and when the ratio of two different frequencies 1 and 2 is given as a negative rational number,
When looking at the X, Y time trajectory, a rosette scan is realized which is a periodic petal-like pattern. Furthermore, when the ratio of two different frequencies 1 and 2 is given as a positive rational number, a periodic spiral scan is realized when looking at the time trajectory of X and Y.
Note that the negative ratio of 1 and 2 means that, for example, the composite signal C' [sin
It means giving (2π 1 t) + sin (2π | 2 | t).
上記のように構成された光学走査装置では、第
１の反射鏡２と第２の反射鏡３はそれぞれ１つの
軸、すなわち、ｘ軸１１とｙ軸１３の周りに回転
振動させるように構成されており、第１の反射鏡
２と第２の反射鏡３の形状は、それぞれ前記ｘ軸
１１と第１の反射鏡２の法線を含む面、及び前記
ｙ軸１３と第２の反射鏡３の法線を含む面に対し
て対称な構造になつているから、ｘ軸１１、ｙ軸
１３周りの回転振動に対するダイナミツクなバラ
ンスが改善される。 In the optical scanning device configured as described above, the first reflecting mirror 2 and the second reflecting mirror 3 are each configured to rotate and vibrate around one axis, that is, the x-axis 11 and the y-axis 13. The shapes of the first reflecting mirror 2 and the second reflecting mirror 3 include a plane including the x-axis 11 and the normal to the first reflecting mirror 2, and a plane including the normal to the y-axis 13 and the second reflecting mirror, respectively. Since the structure is symmetrical with respect to a plane including the normal line of 3, the dynamic balance against rotational vibration around the x-axis 11 and the y-axis 13 is improved.
第２図はこの発明の別の発明の一実施例である
光学走査装置を示す概略構成図で、上記第１図と
同様に、誘導ミサイル等の光学ホーミング装置に
適用した場合の光学走査装置を示している。図に
示すように、反射鏡１４はジンバルの首振り中心
（検出器４の受光面と光軸９との交点）近くに設
置されている。この反射鏡１４は、第１の駆動装
置１０の回転振動部分（図示しない）に固着され
ており、第１の駆動装置１０の回転振動しない部
分（図示しない）は、第２の駆動装置１２の回転
振動部分（図示しない）に固着されている。さら
に、第１の駆動装置１０は、反射鏡１４の反射面
と光軸９との交点を通り、光軸９に垂直で、紙面
に垂直な方向にあるｘ軸１１の周りに反射鏡１４
を回転振動させることができる。一方、第２の駆
動装置１２は、上記交点を通り、光軸９に垂直
で、紙面内にあるｙ軸１３の周りに第１の駆動装
置１０と反射鏡１４を回転振動させることができ
る。反射鏡１４の形状は、前記ｘ軸と前記反射鏡
１４の法線を含む面に対して対称で、かつ前記ｙ
軸と前記反射鏡１４の法線を含む面に対して対称
な構造になつている。 FIG. 2 is a schematic configuration diagram showing an optical scanning device which is another embodiment of the present invention. Similar to FIG. It shows. As shown in the figure, the reflecting mirror 14 is installed near the center of swing of the gimbal (the intersection of the light-receiving surface of the detector 4 and the optical axis 9). This reflecting mirror 14 is fixed to a rotationally vibrating portion (not shown) of the first drive device 10 , and a portion (not shown) of the first drive device 10 that does not rotate and vibrates is fixed to a rotationally vibrating portion (not shown) of the second drive device 12 . It is fixed to a rotating vibration part (not shown). Further, the first driving device 10 moves the reflecting mirror 14 around an x-axis 11 that passes through the intersection of the reflecting surface of the reflecting mirror 14 and the optical axis 9, is perpendicular to the optical axis 9, and is perpendicular to the plane of the paper.
can be rotated and vibrated. On the other hand, the second driving device 12 can rotate and vibrate the first driving device 10 and the reflecting mirror 14 around the y-axis 13 that passes through the above-mentioned intersection, is perpendicular to the optical axis 9, and is in the plane of the drawing. The shape of the reflecting mirror 14 is symmetrical with respect to a plane including the x-axis and the normal to the reflecting mirror 14, and
The structure is symmetrical with respect to a plane including the axis and the normal to the reflecting mirror 14.
今、第２図に示す光学走査装置において、第１
の駆動装置１０の駆動信号として、２つの異なる
周波数1、2の余弦波の合成信号C′〔cos（2π1ｔ
）
＋cos（2π2ｔ）〕を与え、反射鏡１４をｘ軸１１
の周りに回転振動させる。一方、第２の駆動装置
１２の駆動信号として、２つの異なる周波数1、
2の正弦波の合成信号C′〔sin（2π1ｔ）−sin（2
π2
ｔ）〕を与え、第１の駆動装置１０をｙ軸１３の
周りに回転振動させ、この結果反射鏡１４がｙ軸
１３の周りに回転振動する。この時、検出器４の
瞬時視野のｘ軸１１、ｙ軸１３の方向の方向余弦
（Ｘ，Ｙ）は、上記第(1)式で与えられる。ただし、
Ｃは第１の駆動装置１０と第２の駆動装置１２に
よる反射鏡１４の偏向角変化の振幅等で決まる定
数である。 Now, in the optical scanning device shown in FIG.
As a drive signal for the drive device 10 , a composite signal C′ [cos( 2π 1 t
)
+cos(2π 2 t)], and the reflector 14 is aligned with the x-axis 11.
Rotate and vibrate around. On the other hand, as the drive signal of the second drive device 12, two different frequencies 1 ,
2 sine wave composite signal C′ [sin(2π 1 t)−sin(2
π 2
t)] to rotate the first drive device 10 around the y-axis 13, and as a result, the reflecting mirror 14 rotates and oscillates around the y-axis 13. At this time, the direction cosine (X, Y) of the instantaneous field of view of the detector 4 in the x-axis 11 and y-axis 13 directions is given by the above equation (1). however,
C is a constant determined by the amplitude of the deflection angle change of the reflecting mirror 14 caused by the first drive device 10 and the second drive device 12.
この発明は以上説明したとおり、光学走査装置
において、第１の反射鏡と第２の反射鏡を互いに
垂直なｘ軸とｙ軸の周りにそれぞれ回転振動させ
るという構成により、ダイナミツクなバランスを
とることを著しく改善し得るという優れた効果を
奏するものである。
As explained above, this invention achieves dynamic balance in an optical scanning device by rotating and vibrating the first reflecting mirror and the second reflecting mirror around the x-axis and y-axis, which are perpendicular to each other. This has the excellent effect of significantly improving the
また、この発明の別の発明の光学走査装置は、
ジンバルの首振り中心近くに設置された一つの反
射鏡を、互いに垂直なｘ軸とｙ軸の周りに回転振
動させるという構成により、反射鏡の駆動装置が
ジンバルの首振り中心近くに設置されることにな
り、ジンバルのバランスが良くなるという優れた
効果を奏するものである。 Further, an optical scanning device according to another invention of the present invention includes:
With a configuration in which a single reflector installed near the gimbal's oscillation center is rotated and vibrated around mutually perpendicular x- and y-axes, the reflector drive device is installed near the gimbal's oscillation center. This has the excellent effect of improving the balance of the gimbal.
第１図はこの発明の一実施例である光学走査装
置を示す概略構成図、第２図はこの発明の別の発
明の一実施例である光学走査装置を示す概略構成
図、第３図は従来の光学走査装置の一例を示す概
略構成図である。
図において、１……ドーム、２……第１の反射
鏡、３……第２の反射鏡、４……検出器、９……
光軸、１０……第１の駆動装置、１１……ｘ軸、
１２……第２の駆動装置、１３……ｙ軸、１４…
…反射鏡である。なお、各図中、同一符号は同
一、又は相当部分を示す。
FIG. 1 is a schematic configuration diagram showing an optical scanning device which is an embodiment of the present invention, FIG. 2 is a schematic configuration diagram showing an optical scanning device which is another embodiment of the invention, and FIG. 1 is a schematic configuration diagram showing an example of a conventional optical scanning device. In the figure, 1...dome, 2...first reflecting mirror, 3...second reflecting mirror, 4...detector, 9...
Optical axis, 10...first drive device, 11...x axis,
12... second drive device, 13... y axis, 14...
...It is a reflecting mirror. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
第１の反射鏡で反射された光線を反射する第２の
反射鏡から成り、上記入射する光線を集光する光
学系と、上記光学系の集光位置に配置された検出
器と、前記第１の反射鏡の反射面と前記光学系の
光軸との交点を通り、この光軸に垂直なｘ軸の周
りに前記第１の反射鏡を回転振動させる第１の駆
動装置と、前記第２の反射鏡の反射面と前記光軸
との交点を通り、この光軸と前記ｘ軸に垂直なｙ
軸の周りに前記第２の反射鏡を回転振動させる第
２の駆動装置とを備え、前記各第１及び第２の反
射鏡の形状として、それぞれ前記ｘ軸と第１の反
射鏡の法線を含む面、及び前記ｙ軸と第２の反射
鏡の法線を含む面に対して対称な構造のものを用
いると共に、２つの異なる周波数の正弦波の合成
信号と余弦波の合成信号をそれぞれ前記第１及び
第２の駆動装置の駆動信号として用い、前記第１
の反射鏡と前記第２の反射鏡を回転振動させるこ
とにより、視野をロゼツト走査又はスパイラル走
査するように構成したことを特徴とする光学走査
装置。 ２ 反射鏡によつて入射する光線を反射し、集光
する光学系と、この光学系の集光位置に配置され
た検出器と、前記反射鏡の反射面と前記光学系の
光軸との交点を通り、この光軸に垂直で、かつ互
いに直交するｘ軸及びｙ軸の周りに前記反射鏡を
それぞれ回転振動させる第１及び第２の駆動装置
とを備え、前記反射鏡の形状として、前記ｘ軸と
前記反射鏡の法線を含む面に対して対称で、かつ
前記ｙ軸と前記反射鏡の法線を含む面に対して対
称な構造のものを用いると共に、２つの異なる周
波数の正弦波の合成信号と余弦波の合成信号をそ
れぞれ前記第１及び第２の駆動装置の駆動信号と
して用い、前記反射鏡を回転振動させることによ
り、視野をロゼツト走査又はスパイラル走査する
ように構成したことを特徴とする光学走査装置。[Scope of Claims] 1. An optical system for condensing the incident light rays, consisting of a first reflecting mirror that reflects the incident light rays and a second reflecting mirror that reflects the light rays reflected by the first reflecting mirror. around an x-axis that passes through the intersection of the reflective surface of the first reflecting mirror and the optical axis of the optical system and is perpendicular to the optical axis. a first driving device that rotationally vibrates the first reflecting mirror;
a second driving device that rotates and vibrates the second reflecting mirror around an axis, and the shape of each of the first and second reflecting mirrors is set so that the x-axis and the normal to the first reflecting mirror are the same. and a plane that includes the normal to the y-axis and the second reflecting mirror, and a composite signal of a sine wave and a composite signal of a cosine wave of two different frequencies, respectively. used as a drive signal for the first and second drive devices;
An optical scanning device characterized in that the field of view is scanned in a rosette manner or in a spiral manner by rotating and vibrating the reflecting mirror and the second reflecting mirror. 2. An optical system that reflects and focuses incident light rays by a reflecting mirror, a detector placed at the focusing position of this optical system, and a connection between the reflecting surface of the reflecting mirror and the optical axis of the optical system. first and second driving devices each rotating and vibrating the reflecting mirror around an x-axis and a y-axis passing through an intersection, perpendicular to the optical axis, and orthogonal to each other; the shape of the reflecting mirror is as follows: A structure that is symmetrical with respect to a plane that includes the x-axis and the normal to the reflecting mirror, and a structure that is symmetrical with respect to a plane that includes the y-axis and the normal to the reflecting mirror, and has two different frequencies. A sine wave composite signal and a cosine wave composite signal are used as drive signals for the first and second drive devices, respectively, and the reflecting mirror is rotated and vibrated to perform rosette scanning or spiral scanning of the field of view. An optical scanning device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5118285A JPS61209377A (en) | 1985-03-14 | 1985-03-14 | Optical scanning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5118285A JPS61209377A (en) | 1985-03-14 | 1985-03-14 | Optical scanning apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61209377A JPS61209377A (en) | 1986-09-17 |
| JPH0458910B2 true JPH0458910B2 (en) | 1992-09-18 |
Family
ID=12879703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5118285A Granted JPS61209377A (en) | 1985-03-14 | 1985-03-14 | Optical scanning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61209377A (en) |
-
1985
- 1985-03-14 JP JP5118285A patent/JPS61209377A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61209377A (en) | 1986-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |